How can I change paper size in headless Chrome --print-to-pdf

Question

I am using headless Chrome to export html documents to pdf

google-chrome --headless --disable-gpu --print-to-pdf='output_path' 'url' 

How can I change paper size in generated pdf?

I have control on both Chrome parameters and html.

I always get US Letter.

There are no documented command-line options for this.

I've tried setting CSS: @page {size: A4;}. No effect in headless mode, but works when I hit Ctrl+P in normal mode (option to choose paper size for Save as pdf disappears, exported pdf has A4 page size).

I've tried this on Chrome versions 59, 60 and 61 on Ubuntu 16.04.

Answer 1

The page size could be set in inches/mm. I haven't tested with a size in pixels. Here is a set of CSS rules which did the trick for me:

@page {   margin: 0;   padding: 0;   size: 5in 6.5in; } 

My exact case is rendering svg-to-pdf, not html; For svg, you may also need to add width and height attributes to <svg> tag:

<svg width="5in" height="6.5in" ...> 

That's all! Output PDF won't have margins, and will preserve the desired size - 5"x6.5" in my case.